Which of the following can be determined through the examination of fossils?

the reason monarch butterflies migrate across north america

the existence and characteristics of extinct dinosaurs

the mating habits of praying mantises

the ways large mammals use sounds and smells to communicate

Ascientist and her team counted 200 individual deer in an area of 10 square kilometers. what is the population density?

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

When ash and dust begin to settle on the ground, they eventually become compacted by